dojo: how to i know all the extension points of a widget

Say for example that i have a grid (dojox.grid.DataGrid). I want to know all the extension points available on that grid. When checked with the dojo api doc in events section of the grid i can开发者_运维问答t find the extension points, (say for example extension point onBeforeRow is not listed in that event section).

Thanks in advance.

pretty much every public method is an extension point, in that you can dojo.connect to it. The "on" pattern indicates an event pattern, and there's no formal declaration beyond the naming pattern AFAIK.